# Algebra

posted by .

Will be the graphs of each of these equations be perpendicular.
1.y=7x-9
slope=-7
y-intercept=-9

2.-3y=21x+7
y=-7x(7/3)
slope=-7
y-intercept=-(7/3)

• Algebra -

They are perpendicular if the product of their slopes is -1.

So, is (-7)(-7) = -1 ?

## Similar Questions

1. ### Slopes

Given y = 2x – 4, choose the statement that accurately describes this line. The slope is 2 and the y intercept is 4. The slope is 2 and the y intercept is -4. The slope is 4 and the y intercept is 2. The slope is -4 and they y intercept …
2. ### MATH

Please help me!!!!!!!!!!!!!!!1 Instructions a. If needed, rewrite the following equations in slope-intercept form. * b. Indicate the slope and the y-intercept for each of the equations. c. Using graph paper and a straight edge, graph …
3. ### math

How do you solve this problem? Find the slope-intercept equation of the line that has the given characteristics. Slope 8 and y-intercept (0,5) The slope-intercept equations is y=
4. ### Math

For the equation y = -6x, what is the slope and y intercept?
5. ### algebra

What is the slope and y-intercept of the line represented by the equation below?
6. ### Algebra

I have an assignment that asks me to write an equation in slope-intercept, point-slope, or standard form for the information given and to explain why the chosen form would be best. Below is the information given. 1. passing through …
7. ### Algebra

I really don't understand what I am doing. Needing help! With graphing, tell whether the graphs of each pair of equations of each pair of equations are perpendicular. 1.y=7x-9 2.-3y=21x+7 slope=7 y=-7x-(7/3) y-intercept=-9 slope=-7 …
8. ### Pre-Calculus

help please Identify the slope and intercept of the following linear equation. y=3/7x-5 Slope: 3/7; intercept: 5 Slope: -5; intercept: 3/7 Slope: 5; intercept: 3/7 Slope: 3/7; intercept: -5
9. ### math - slope-intercept

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?
10. ### Algebra

Write the equation in slope-intercept form. What are the slop and y-intercept?

More Similar Questions